With her husband and two young daughters by her side, she tried to alleviate her thirst but ended up encountering a tragic turn of events.
"Someone said she drank four bottles of water in 20 minutes," her brother Devon Miller told WRTV.
"I mean, an average water bottle is like 16 ounces, so that was 64 ounces that she drank in a span of 20 minutes. That's half a gallon. That's what you're supposed to drink in a whole day."
On the last day of the family's trip, Ashley Summers began feeling like she couldn't drink enough water. As her worried family looked on, She complained of lightheaded and having a stubborn headache.
Unfortunately, these seemingly harmless symptoms led to a devastating tragedy that forever changed their lives.
"My sister, Holly, called me, and she was just an absolute wreck. She was like 'Ashley is in the hospital. She has brain swelling, they don't know what's causing it, they don't know what they can do to get it to go down, and it's not looking good,'" said Miller.
Summers passed out in the garage and was taken to the hospital.